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Characterizing W-2 SLSF experiment temperature oscillations using computer graphics. [Sodium Loop Safety Facility]

Description: The W-2 SLSF (Sodium Loop Safety Facility) experiment was an instrumented in-reactor test performed to characterize the failure response of full-length, preconditioned LMFBR prototypic fuel pins to slow transient overpower (TOP) conditions. Although the test results were expected to confirm analytical predictions of upper level failure and fuel expulsion, an axial midplane failure was experienced. Extensive post-test analyses were conducted to understand all of the unexpected behavior in the ex… more
Date: June 23, 1983
Creator: Smith, D. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Three-Dimensional Finite-Element Analysis of the Cellular Convection Phenomena in the Clinch River Breeder Reactor Plant Prototype Pump

Description: Cellular convection was studied rigorously during the development of the Clinch River Breeder Reactor Plant (CRBRP) Program Pumps. This paper presents the development of a three-dimensional finite-element heat transfer model which accounts for the cellular convection phenomena. A buoyancy driven cellular convection flow pattern is introduced in the annulus region between the upper inner structure and the pump tank. Steady-state thermal data were obtained for several test conditions for argon ga… more
Date: January 1, 1983
Creator: Silver, A. H. & Lee, J. Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Heat storage and distribution inside passive-solar buildings

Description: Passive-solar buildings are investigated from the viewpoint of the storage of solar heat in materials of the building: walls, floors, ceilings, and furniture. The effects of the location, material, thickness, and orientation of each internal building surface are investigated. The concept of diurnal heat capacity is introduced and a method of using this parameter to estimate clear-day temperature swings is developed. Convective coupling to remote rooms within a building is discussed, including b… more
Date: January 1, 1983
Creator: Balcomb, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diurnal heat storage in direct-gain passive-solar buildings

Description: This paper presents a simplified method for predicting temperature swings in direct-gain buildings. It is called the DHC method due to the use of a diurnal heat capacity (DHC). Diurnal heat capacity is a measure of the effective amount of heat stored during a sunny day and then released at night - the typical 24-hour diurnal cycle. This enables prediction of the maximum temperature swings experienced in the building and can be calculated using a single 24-hour harmonic. The advantage is that cl… more
Date: January 1, 1983
Creator: Balcomb, J.D. & Neeper, D.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Quasi-steady model for predicting temperature of aqueous foams circulating in geothermal wellbores

Description: A quasi-steady model has been developed for predicting the temperature profiles of aqueous foams circulating in geothermal wellbores. The model assumes steady one-dimensional incompressible flow in the wellbore; heat transfer by conduction from the geologic formation to the foam is one-dimensional radially and time-dependent. The vertical temperature distribution in the undisturbed geologic formation is assumed to be composed of two linear segments. For constant values of the convective heat-tr… more
Date: January 1, 1983
Creator: Blackwell, B.F. & Ortega, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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In-vessel thermal-hydraulic analysis

Description: This paper presents some recent results obtained from the COMMIX-1A code for the EBR-II reactor transient No. 10, Phase 2. Both the reactor vessel and the neutron shield assembly and assembly arrangement in the reactor core are shown. The computational grid system used in COMMIX-1A is presented. Reactor flow and power transients are shown. Velocity and temperature distributions at steady state and t (time) = 60 sec are included. Finally, a comparison between the calculated results from COMMIX-1… more
Date: January 1, 1983
Creator: Sha, W. T.; Baumann, W. L.; Domanus, H. M.; Mohr, D.; Schmitt, R. C. & Sullivan, J. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of the OPERA 15-pin experiment with SABRE-2P. [LMFBR]

Description: The OPERA (Out-of-Pile Expulsion and Reentry Apparatus) experiment simulates the initial phase of a pump coastdown without scram of a liquid-metal fast breeder reactor, specifically the Fast Flux Test Facility. The test section is a 15-pin 60/sup 0/ triangular sector designed to simulate a full-size 61-pin hexagonal bundle. A previous study indicates this to be an adequate simulation. In this paper, experimental results from the OPERA 15-pin experiment performed at ANL in 1982 are compared to a… more
Date: January 1, 1983
Creator: Rose, S. D. & Carbajo, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Heat distribution by natural convection

Description: Natural convection between spaces in a building can play a major role in energy transfer. Two situations are investigated: convection through a single doorway into a remote room, and a convective loop in a two-story house with a south sunspace where a north stairway serves as the return path. A doorway-sizing equation is given for the single-door case. Detailed data are given from the monitoring of airflow in one two-story house and summary data are given for five others. Observations on the na… more
Date: January 1, 1983
Creator: Balcomb, J.D. & Yamaguchi, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evaluation of molten lead mixing in sodium coolant by diffusion for application to PAHR. [LMFBR]

Description: In post-accident heat removal (PAHR) applications the use of a lead slab is being considered for protecting a porous bed of steel shots in ex-vessel cavity from direct impingement of molten steel or fuel upon vessel failure following a hypothetical core dissembly accident in an LMFBR. The porous bed is provided to increase coolability of the fuel debris by the sodium coolant. The objectives of the present study are (1) to determine melting rates of lead slabs of various thicknesses in contact w… more
Date: January 1, 1983
Creator: Chawla, T. C.; Pedersen, D. R.; Leaf, G. & Minkowycz, W. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Prediction of internal temperature swings in direct-gain passive-solar buildings

Description: The diurnal heat capacity method is presented for estimating inside-temperature swings attributable to direct winter solar gain. The procedures are simplified to be suitable for hand analysis, aided by tables of diurnal heat capacity for various materials. The method has been spot checked against computer simulation and has been used successfully by a group of 20 builders in New Mexico to analyze whether temperature swings would be excessive in their designs.
Date: January 1, 1983
Creator: Balcomb, J. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Dynamic stability experimental/analytical program results on a multiple tube sodium heated steam generator model employing double wall tubes. [LMFBR]

Description: Experimental results are described of a test program which induced water/steam dynamic instability in the multiple tube circuits of a sodium heated, double-wall tube, steam generator model whose water/steam side is designed to operate under once-through conditions with exit superheat (457/sup 0/C/855/sup 0/F; 15.8 MPa/2290 psia). The instability thresholds were determined experimentally with off-nominal operation in order to establish the stability margin that exists with and without the dampin… more
Date: January 1, 1983
Creator: Efferding, L.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Limits on the thermal energy release from radioactive wastes in a mined geologic repository

Description: The theraml energy release of nuclear wastes is a major factor in the design of geologic repositories. Thermal limits need to be placed on various aspets of the geologic waste disposal system to avoid or retard the degradation of repository performance because of increased temperatures. The thermal limits in current use today are summarized in this report. These limits are placed in a hierarchial structure of thermal criteria consistent with the failure mechanism they are trying to prevent. The… more
Date: March 1, 1983
Creator: Scott, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Natural convection experiments in a liquid-saturated porous medium bounded by vertical coaxial cylinders

Description: An experimental effort is presently underway to investigate natural convection phenomena in liquid-saturated porous media utilizing a geometry, and hydrodynamic/thermal boundary conditions, relevant to the problem of nuclear-waste isolation in geologic repositories. During the first phase of this research program, detailed measurements were made of the steady-state thermal field throughout an annular test region bounded by a vertical, constant-heat-flux, inner cylinder and a concentrically-plac… more
Date: January 1, 1983
Creator: Reda, D.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermal performance of a geofluid direct-contact heat exchanger

Description: A sieve-tray direct-contact heat exchanger was used to transfer heat from a 280/sup 0/F geothermal fluid to the working fluid, isobutane, in the Raft River 60kW prototype plant. A series of experiments were run at different working fluid-to-geofluid flow ratios which produced different boiling conditions. In this paper, the results of these experiments are analyzed on the basis of thermal performance. The flow ratio, the geofluid outlet temperature, the working fluid inlet temperature, the amou… more
Date: January 1, 1983
Creator: Wiggins, D.J.; Mines, G.L. & Wahl, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Laboratory Physical Model for Pattern Injection in Geothermal Systems

Description: In the development of geothermal sources for power generation, production of geothermal fluids as well as reinjection becomes an important aspect for significant heat extraction from the reservoir rock. The purpose of this work was to understand how cold water injection in five spot pattern affected the temperature distributions and production pressures in a physical model with a constant temperature heat source. The production and injection rates were varied as well as their respective depths.… more
Date: December 15, 1983
Creator: Parlaktuna, M. & Okandan, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measured performance results: low-cost solar water heating systems in the San Luis Valley

Description: The measured performance of seven low-cost solar water heating systems in the San Luis Valley of southern Colorado is summarized. During the summer and fall of 1981, SERI monitored a variety of low-cost solar water heating system designs and components. Five systems had site-built collectors, and four included low-cost tank-in-jacket heat exchanger/storage tank components. Two were air-to-water systems. The five liquid-based systems included a drain-down design, a propylene glycol-charged therm… more
Date: January 1, 1983
Creator: Swisher, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

First phase of small diameter heater experiments in tuff

Description: As part of the Nevada Nuclear Waste Storage Investigations (NNWSI) project, we have undertaken small diameter heater experiments in the G-Tunnel Underground Facility on the Nevada Test Site (NTS). These experiments are to evaluate the thermal and hydrothermal behavior which might be encountered if heat producing nuclear waste were disposed of in welded and nonwelded tuffs. The two Phase I experiments discussed have focused on vertical borehole emplacements. In each experiment, temperatures were… more
Date: December 31, 1983
Creator: Zimmerman, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Component temperature versus laser-welding parameters

Description: Applications have arisen in which the component temperature near a laser weld is critical because of possible damage to the explosive powder adjacent to the member being welded. To evaluate the thermal excursion experienced at the powder cavity wall, a study was conducted using assemblies that had been equipped with 0.05 mm diameter thermocouple wires. The main goal of the study was to determine how changes in the laser welding parameters owuld affect the powder cavity wall temperature. The obj… more
Date: January 1, 1983
Creator: Jones, William H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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